Alert archive / Texas / Freeze Warnings in 2021
Freeze Warning 4, NWS Brownsville, TX
NWS Brownsville, TX issued this freeze warning at Feb 17, 2021, 5:56 PM CST for Brooks County, Jim Hogg County, Kenedy County, Texas. It took effect at Feb 17, 2021, 9:00 PM CST. It was in force for 12 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 17, 2021, 5:56 PM CST (23:56 UTC)
- In effect from
- Feb 17, 2021, 9:00 PM CST
- Expired
- Feb 18, 2021, 9:00 AM CST
- In force
- 12 hr
- Issued by
- NWS Brownsville, TX
Counties Brooks County, TX, Jim Hogg County, TX, Kenedy County, TX
The radar
The Corpus Christi radar (KCRP), 110 km from the middle of the area, began a volume at 23:57 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Corpus Christi, TX (KCRP), launched 12:00Z, 11.9 hours before the alert went out and 116 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 47 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 253 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 330 m²/s²
- 0-3 km storm-relative helicity
- 469 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
029 WWUS74 KBRO 172356 NPWBRO URGENT - WEATHER MESSAGE National Weather Service Brownsville TX Issued by National Weather Service San Juan PR 556 PM CST Wed Feb 17 2021 TXZ249>251-180800- /O.NEW.KBRO.FZ.W.0004.210218T0300Z-210218T1500Z/ Jim Hogg-Brooks-Inland Kenedy- Including the cities of Hebbronville, Falfurrias, and Sarita 556 PM CST Wed Feb 17 2021 ...FREEZE WARNING IN EFFECT FROM 9 PM THIS EVENING TO 9 AM CST THURSDAY... * WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Jim Hogg, Brooks and Inland Kenedy Counties. * WHEN...From 9 PM this evening to 9 AM CST Thursday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
1 follow-up statement
030 WWUS74 KBRO 180928 NPWBRO URGENT - WEATHER MESSAGE National Weather Service Brownsville TX Issued by National Weather Service San Juan PR 328 AM CST Thu Feb 18 2021 TXZ249>251-181500- /O.CON.KBRO.FZ.W.0004.000000T0000Z-210218T1500Z/ Jim Hogg-Brooks-Inland Kenedy- Including the cities of Hebbronville, Falfurrias, and Sarita 328 AM CST Thu Feb 18 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... * WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Jim Hogg, Brooks and Inland Kenedy Counties. * WHEN...Until 9 AM CST this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$
The office that day
Everything else NWS Brownsville, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 16, 9:38 PM CST | Winter Weather Advisory | BRO | Brooks, Jim Hogg, Kenedy | 11 hr |
| Feb 17, 3:34 AM CST | Small Craft Advisory | BRO | 56 hr |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.